Trace-holder for singletrees.



Patented Feb. 20, I900.

L. M. CAMPAU. TRACE HOLDER FDR SINGLETREES.

(Application filed Nov. 3, 1899.)

(No Model.)

Fuel.

Flaps.

wlmss'sss INVENTOI? A 77'0RNEYS UNITED STATES PATENT OFFICE.

LAVRENOE MAXIME OAMPAU, OF DETROIT, MICHIGAN.

TRACE-HOLDER FOR SINGLETREES.

SPECIFICATION forming part of Letters Patent No. 643,943, dated February 20, 1900.

Application filed November 3, 1899. $erial IT -735,700. (No model.)

To all whom it may concern:

Be it known that I, LAWRENCE MAXIME OAMPAU, a citizen of the United States, and a resident of -Detroit, in the county of Wayne and State of Michigan, have invented a new and Improved Trace-Holdin g Attachment for Singletrees, of which the following is a full, clear, and exact description.

The object of the invention is to provide a simple formof trace-holder which will serve to guide the singletree into the eye of a trace, the holder being so constructed that after the trace is on the singletree the said holder may be shifted to effectually prevent the trace becoming accidentally removed from the singletree.

Another object of the invention is to provide the singletree with a recess adapted to receive the trace,which recess when the singletree is passed through the eye of the trace is covered by the holder, and when the holder is carried to retaining position the said recess is exposed and the trace automatically fits therein, and by this means a double hold is provided for the trace, the recess and the holding device coacting to retain the trace in position.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a plan view of a singletree and portions of traces in position thereou,the holding device at one end of the singletree being in position to admit of the trace being carried upon or from the singletree, while the retaining device at the opposite end is shown in position to prevent the trace from leaving the singletree. Fig. 2 is an enlarged perspective view of one end of a singletree and the portion of the trace located on the singletree, illustrating the holding attachment in position to retain the trace upon the singletree; and Fig. 3 is a transverse section through the singletree and through the holding attachment.

The singletree A is of the ordinary type and is provided with a flat surface 10 on its rear edge near each end, as is particularly shown in Figs. 1 and 2, and at the inner end of each flatsurface 10 a recess 11 is made in the rear longitudinal edge of the singletree, as shown in Fig. 1. A button 12 is located upon each flat surface 10 of the singletree, and each button is permanently attached to the singletree by av pivot pin or screw 13 or a like device,- and said pivot pins or screws 13 are made to pass through the fiat surfaces 10 of the singletree, as shown in both Figs. 1 and 2. The rear inclined face of the button 12 is convexed and'the front surface of the button is fiat, so that when a button is placed longitudinally of the singletree in engagement with a flat surface 10 thereof the outer edge of the button will so closely approach the rear edge of the singletree that a trace may be readily slipped over an end of the singletree and over the button. Furthermore, each button 12 is so placed on the singletree that when it is parallel with said singletree, as shown at the right in Fig. 1, the inner end of the button will extend to a greater or less extent over the recess 1'1 at that end, and thus direct the trace past said recess.

When a trace 14, provided with the usual eye 15, is to be attached to a singletree, the button 12 at an end of the singletree is brought to a position parallel with said sin gletree, and the end of the singletree may then be passed through the eye of the trace, and when the trace has been carried past the-recess 11 the button is turned until it is at right angles to the rear edge of the singletree, as shown at the left in Fig. 1 and in Fig. 2, whereupon the eye of the trace will be received in the recess 11, and the button 12 will cross the eye of the trace at the outside thereof and prevent displacement of the trace under all conditions of wear, since the trace will press against the inner longitudinal surface of the button and will retain it in its vertical position.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. A singletree provided with a flat surface at its rear edge near the ends, and a recess at the inner ends of the said flat portions, and buttons pivoted at the fiat surfaces of the singletree, the said buttons being capableof standing at a right angle tothe singletree, or

paralleltherewith extending over the recesses, with the singletree closely approach the rear to as described. edge of the singletree, the said buttons being 2. A singletree, provided with flat surfaces adapted, when parallel with the singletree, at its rear edge near its ends and recessesadto extend across the said recesses, as dejacent t0 the inner ends of said flat surfaces, scribed.

and buttons pivoted atsaidflat surfaces, the LAWRENCE MAXINE OAMPAU.

said buttons having flat forward faces and Witnesses:

convexed rear surfaces, whereby the ends of O. PERRY ALLEN, the buttons when the buttons are parallel JOHN D. JACKSON. 

